Modulating conductivity of Au/CNT composites in THz frequency range: A THz resistor

Author

Polley, Debanjan ; Patra, Abani ; Barman, Anjan ; Mitra, Rajib K.

Author_Institution

Dept. of Condensed Matter Phys. & Mater. Sci., S.N. Bose Nat. Centre for Basic Sci., Kolkata, India

fYear

2014

fDate

14-19 Sept. 2014

Firstpage

1

Lastpage

2

Abstract

We report the tunable conductivity of single walled carbon nanotubes and multi-walled carbon nanotubes with their surface walls decorated by Gold nanoparticles in the elusive THz frequency range (0.3-2.0 THz). Colloidal gold nanoparticles were synthesized by the reduction of gold chloride solution using tri-sodium citrate. A simple chemical route is followed to attach Au NP on the surfaces of carbon nanotubes. THz conductivity spectra are explained with the help of modified Universal Dielectric Response model.

Keywords

carbon nanotubes; colloids; composite materials; gold; nanoparticles; resistors; terahertz wave devices; Au-C; THz conductivity spectra; THz frequency range; THz resistor; chemical route; colloidal gold nanoparticles; conductivity modulation; frequency 0.3 THz to 2.0 THz; gold chloride solution reduction; modified universal dielectric response model; multiwalled carbon nanotubes; single walled carbon nanotubes; tri-sodium citrate; tunable conductivity; Carbon nanotubes; Conductivity; Films; Gold; Nanoparticles; Optical surface waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on

Conference_Location

Tucson, AZ

Type

conf

DOI

10.1109/IRMMW-THz.2014.6955998

Filename

6955998